Early sewing machine invention...

SCIENTIFIC AMERICAN, New York, December 1, 1855 See the photo below for the great front page of this issue, which includes a nice, detailed diagram of the: "Cowperthwaite's Patent Sewing Machine" with a lengthy, detailed, related article which carries over to page 2.
You get the complete 8 page issue which is in nice condition save for some minor irregularity at the blank spine margin. A very early issue, and very early item on a sewing machine.